PostgreSQL
Used by 12 peoplepostgresql.org ↗
“I love Postgres almost as much as Python and greatly appreciate Heroku's Postgres service.”
Chad Whitacre Interview, Hacker, Founder (Gittip) · via Uses This 
“I contribute to PostgreSQL, run conferences, and keep chickens.”
Selena Deckelmann Interview, COO (Prime Radiant), PostgreSQL contributor · via Uses This 
“For databases, PostgreSQL is my workhorse.”
Matthew Mckeon Interview, Developer (IBM Visual Communication Lab) · via Uses This 
“I use PostgreSQL for my database.”
Aaron Swartz Interview, Hacker, activist · via Uses This
